1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
import vim
import re
from vim_bridge import bridged
def get_table_bounds():
row, col = vim.current.window.cursor
upper = lower = row
try:
while vim.current.buffer[upper - 1].strip():
upper -= 1
except IndexError:
pass
else:
upper += 1
try:
while vim.current.buffer[lower - 1].strip():
lower += 1
except IndexError:
pass
else:
lower -= 1
return (upper, lower)
def join_rows(rows, sep='\n'):
"""Given a list of rows (a list of lists) this function returns a
flattened list where each the individual columns of all rows are joined
together using the line separator.
"""
output = []
for row in rows:
# grow output array, if necessary
if len(output) <= len(row):
for i in range(len(row) - len(output)):
output.extend([[]])
for i, field in enumerate(row):
field_text = field.strip()
if field_text:
output[i].append(field_text)
return map(lambda lines: sep.join(lines), output)
def line_is_separator(line):
return re.match('^[\t +=-]+$', line)
def has_line_seps(raw_lines):
for line in raw_lines:
if line_is_separator(line):
return True
return False
def partition_raw_lines(raw_lines):
"""Partitions a list of raw input lines so that between each partition, a
table row separator can be placed.
"""
if not has_line_seps(raw_lines):
return map(lambda x: [x], raw_lines)
curr_part = []
parts = [curr_part]
for line in raw_lines:
if line_is_separator(line):
curr_part = []
parts.append(curr_part)
else:
curr_part.append(line)
# remove any empty partitions (typically the first and last ones)
return filter(lambda x: x != [], parts)
def unify_table(table):
"""Given a list of rows (i.e. a table), this function returns a new table
in which all rows have an equal amount of columns. If all full column is
empty (i.e. all rows have that field empty), the column is removed.
"""
max_fields = max(map(lambda row: len(row), table))
empty_cols = [True] * max_fields
output = []
for row in table:
curr_len = len(row)
if curr_len < max_fields:
row += [''] * (max_fields - curr_len)
output.append(row)
# register empty columns (to be removed at the end)
for i in range(len(row)):
if row[i].strip():
empty_cols[i] = False
# remove empty columns from all rows
table = output
output = []
for row in table:
cols = []
for i in range(len(row)):
should_remove = empty_cols[i]
if not should_remove:
cols.append(row[i])
output.append(cols)
return output
def split_table_row(row_string):
if row_string.find("|") >= 0:
# first, strip off the outer table drawings
row_string = re.sub(r'^\s*\||\|\s*$', '', row_string)
return re.split(r'\s*\|\s*', row_string.strip())
return re.split(r'\s\s+', row_string.rstrip())
def parse_table(raw_lines):
row_partition = partition_raw_lines(raw_lines)
lines = map(lambda row_string: join_rows(map(split_table_row, row_string)),
row_partition)
return unify_table(lines)
def table_line(widths, header=False):
if header:
linechar = '='
else:
linechar = '-'
sep = '+'
parts = []
for width in widths:
parts.append(linechar * width)
if parts:
parts = [''] + parts + ['']
return sep.join(parts)
def get_column_widths(table):
widths = []
for row in table:
num_fields = len(row)
# dynamically grow
if num_fields >= len(widths):
widths.extend([0] * (num_fields - len(widths)))
for i in range(num_fields):
field_text = row[i]
field_width = len(field_text)
widths[i] = max(widths[i], field_width)
return widths
def pad_fields(table, widths=None):
"""Pads fields of the table, so each row lines up nicely with the others.
If the widths param is None, the widths are calculated automatically.
"""
if widths is None:
widths = get_column_widths(table)
widths = map(lambda w: ' %-' + str(w) + 's ', widths)
# Pad all fields using the calculated widths
output = []
for row in table:
new_row = []
for i in range(len(row)):
col = row[i]
col = widths[i] % col.strip()
new_row.append(col)
output.append(new_row)
return output
def draw_table(table):
if table == []:
return []
col_widths = get_column_widths(table)
table = pad_fields(table, col_widths)
# Reserve room for the spaces
col_widths = map(lambda x: x + 2, col_widths)
header_line = table_line(col_widths, header=True)
normal_line = table_line(col_widths, header=False)
output = [header_line]
first = True
for row in table:
output.append("|".join([''] + row + ['']))
if first:
output.append(header_line)
first = False
else:
output.append(normal_line)
return output
@bridged
def reformat_table():
upper, lower = get_table_bounds()
slice = vim.current.buffer[upper - 1:lower]
table = parse_table(slice)
slice = draw_table(table)
vim.current.buffer[upper - 1:lower] = slice
|
